/*
 * The contents of this web application are subject to the Mozilla Public License Version 
 * 1.1 (the "License"); you may not use this web application except in compliance with 
 * the License. You may obtain a copy of the License at http://www.mozilla.org/MPL/.
 * 
 * Software distributed under the License is distributed on an "AS IS" basis, 
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License 
 * for the specific language governing rights and limitations under the License.
 * 
 * The Original Code is owned by and the Initial Developer of the Original Code is 
 * Composite A/S (Danish business reg.no. 21744409). All Rights Reserved
 * 
 * Section 11 of the License is EXPRESSLY amended to include a provision stating 
 * that any dispute, including but not limited to disputes related to the enforcement 
 * of the License, to which Composite A/S as owner of the Original Code, as Initial 
 * Developer or in any other role, becomes a part to shall be governed by Danish law 
 * and be initiated before the Copenhagen City Court ("K�benhavns Byret")            
 */

using System;
using System.Collections.Generic;
using System.Linq;


namespace Composite.Core.Extensions
{
	internal static class IEnumerableExtensionMethods
	{
        public static List<TTarget> ToList<TSource, TTarget>(this IEnumerable<TSource> source, Func<TSource, TTarget> objectCreator)
        {
            if (source == null) throw new ArgumentNullException("source");

            List<TTarget> targetList = new List<TTarget>();
            foreach (TSource sourceElement in source)
            {
                TTarget target = objectCreator(sourceElement);
                targetList.Add(target);
            }

            return targetList;
        }

        public static void ForEach<TSource>(this IEnumerable<TSource> source, Action<TSource> action)
        {
            foreach (TSource element in source)
            {
                action(element);
            }
        }

	    public static IEnumerable<T> ConcatOrDefault<T>(this IEnumerable<T> enumerable, IEnumerable<T> enumerableToAppend)
	    {
	        if (enumerable == null) return enumerableToAppend;
	        if (enumerableToAppend == null) return enumerable;

	        return enumerable.Concat(enumerableToAppend);
	    }
	}
}
